A busy HR manager is reviewing stacks of applications for a position that just opened in the company. The HR manager knows that a host of factors determine employee performance: prior experience, training, interpersonal skills, personality, IQ, emotional intelligence, and work ethic. But after reviewing hundreds of resumes, as many HR managers do, the details on each applicant blur together. And so the HR manager does what many employers do: defaults to selecting hires based on the prestige and rank of the university from which graduates hail.